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  <a href="http://sudopedia.enjoysudoku.com/Aligned_Pair_Exclusion.html">Aligned {0} Exclusion</a>
  <p>
   There are several possible combinations of value pairs for the two <b>cells {1}</b>.<br/>
   For some of the combinations a cell seen by both <b>{1}</b> exists with the same two digits as its only candidates.<br/>
   In this case the combination can be eliminated because it would leave this cell without candidates and render the puzzle invalid.
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  <p>
   The following combinations can be eliminated:<br/>
   {2}
  </p>
  <p>
   Because <b>digit {4}</b> occurs in none of the remaining combinations it can be removed from <b>cell {3}</b>.
  </p>
  <p>
   Note: strictly speaking the aligned subset exclusion technique requires the cells to be aligned in a row or column of the same block but the technique works with non-aligned cells too.
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